{"product_id":"pro-ject-tube-box-s3-b","title":"Pro-Ject Tube Box S3 B","description":"\u003ch3\u003ePro-Ject Tube Box S3 B – Balanced Tube Phono Preamplifier (MM\/MC)\u003c\/h3\u003e\n\u003cp\u003eThe Pro-Ject Tube Box S3 B is a high-performance phono preamplifier that brings true tube warmth and balanced connectivity to vinyl playback. With replaceable ECC83 tubes, a fully discrete gain stage, and flexible loading options for MM and MC cartridges, it is designed to satisfy both audiophiles and everyday vinyl enthusiasts.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced design:\u003c\/strong\u003e 5-pin mini XLR balanced input and balanced XLR outputs for superior channel separation and noise rejection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully discrete gain stage:\u003c\/strong\u003e Symmetrical circuitry ensures clean, transparent amplification without op-amps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable tube stage:\u003c\/strong\u003e Uses two ECC83 (12AX7) tubes, giving you the option to roll tubes for sonic tailoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront-panel controls:\u003c\/strong\u003e Easy gain, impedance, capacitance, and subsonic filter adjustments accessible from the faceplate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRIAA precision:\u003c\/strong\u003e Semi-passive equalization with accuracy within ±0.4 dB from 20 Hz–20 kHz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium construction:\u003c\/strong\u003e Rigid aluminium chassis shields the delicate circuitry from electromagnetic interference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCustomer Benefits\u003c\/h4\u003e\n\u003cp\u003eThe Tube Box S3 B gives vinyl lovers the flexibility of both RCA and balanced connections, letting you integrate it into a wide range of hi-fi setups. Its discrete dual-mono tube design ensures musical warmth, refined clarity, and low noise, while the adjustable settings let you match it precisely to your cartridge. Compact, elegant, and powerful, it’s an ideal upgrade for serious analog playback.\u003c\/p\u003e\n\u003ch4\u003eQuick Specs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubes:\u003c\/strong\u003e 2 × ECC83 (12AX7)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 10, 50, 100, 1k, 47k Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Capacitance:\u003c\/strong\u003e 50, 150, 300, 400 pF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e 40, 45, 60, 65 dB (+6 dB with XLR out)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR (MM):\u003c\/strong\u003e 97 dBV (40 dB), 105 dBV A-weighted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR (MC):\u003c\/strong\u003e 83 dBV (60 dB), 88 dBV A-weighted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD @ 1 kHz:\u003c\/strong\u003e \u0026lt;0.005% (MM), \u0026lt;0.01% (MC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD (20 Hz–20 kHz):\u003c\/strong\u003e \u0026lt;0.1% (MM), \u0026lt;0.03% (MC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRIAA Accuracy:\u003c\/strong\u003e ±0.4 dB (20 Hz–20 kHz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubsonic Filter:\u003c\/strong\u003e 20 Hz, 18 dB\/octave\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 1 × 5-pin mini XLR, 1 × pair RCA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e 1 × pair RCA, 1 × pair XLR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 18 V \/ 1000 mA DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 18 V \/ 800 mA (operating), \u0026lt;0.5 W (standby)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 20.6 × 8.1 × 15.3 cm (16.4 cm with sockets)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.01 kg (without PSU)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat’s in the Box\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePro-Ject Tube Box S3 B preamplifier\u003c\/li\u003e\n\u003cli\u003eExternal 18 V \/ 1000 mA DC power supply\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUse Cases \/ Ideal For\u003c\/h4\u003e\n\u003cp\u003ePerfect for vinyl enthusiasts who want to experience tube warmth with the flexibility of balanced outputs. Ideal for medium to high-end hi-fi systems where noise rejection, cartridge matching, and musicality are priorities.\u003c\/p\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eSupports both moving magnet (MM) and moving coil (MC) cartridges. Connects easily with integrated amplifiers, stereo receivers, or dedicated preamps via RCA or XLR. Compact enough to suit desktops or hi-fi racks.\u003c\/p\u003e\n\u003ch4\u003ePros \u0026amp; Cons\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e✅ Pros:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBalanced inputs and outputs for noise-free performance\u003c\/li\u003e\n\u003cli\u003eFront-panel adjustment makes setup easy\u003c\/li\u003e\n\u003cli\u003eReplaceable tubes allow for sound customization\u003c\/li\u003e\n\u003cli\u003eCompact yet feature-rich design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Cons:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires external PSU\u003c\/li\u003e\n\u003cli\u003eRCA and XLR limited to line-level (no digital output)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Pro-Ject Tube Box S3 B is a refined step into balanced tube phono amplification—compact, versatile, and sonically engaging, it brings your vinyl collection to life with Soundium.\u003c\/p\u003e","brand":"Pro-Ject","offers":[{"title":"Black","offer_id":54447845310732,"sku":"PJ-TUBE-BOX-S3B-BL","price":599.0,"currency_code":"EUR","in_stock":true},{"title":"Silver","offer_id":54447845343500,"sku":"PJ-TUBE-BOX-S3B-SL","price":599.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7416\/0652\/files\/pro-ject-tube-box-s3-b-hero.jpg?v=1778063957","url":"https:\/\/soundium.com\/el\/products\/pro-ject-tube-box-s3-b","provider":"Soundium","version":"1.0","type":"link"}